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[NETLABEL]: Don't produce unused variables when IPv6 is off. 

Some code declares variables on the stack, but uses them
under #ifdef CONFIG_IPV6, so thay become unused when ipv6
is off. Fortunately, they are used in a switch's case
branches, so the fix is rather simple.

Is it OK from coding style POV to add braces inside "cases",
or should I better avoid such style and rework the patch?

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-02-12 22:37:19 -08:00 committed by David S. Miller
parent 94de7feb2d
commit 56628b1d89
1 changed files with 18 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
net/netlabel/netlabel_unlabeled.c
View File

@ -617,8 +617,6 @@ static int netlbl_unlhsh_add(struct net *net,
int ifindex;
struct net_device *dev;
struct netlbl_unlhsh_iface *iface;
struct in_addr *addr4, *mask4;
struct in6_addr *addr6, *mask6;
struct audit_buffer *audit_buf = NULL;
char *secctx = NULL;
u32 secctx_len;
@ -651,7 +649,9 @@ static int netlbl_unlhsh_add(struct net *net,
audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCADD,
audit_info);
switch (addr_len) {
case sizeof(struct in_addr):
case sizeof(struct in_addr): {
struct in_addr *addr4, *mask4;
addr4 = (struct in_addr *)addr;
mask4 = (struct in_addr *)mask;
ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, secid);
@ -661,8 +661,11 @@ static int netlbl_unlhsh_add(struct net *net,
addr4->s_addr,
mask4->s_addr);
break;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case sizeof(struct in6_addr):
case sizeof(struct in6_addr): {
struct in6_addr *addr6, *mask6;
addr6 = (struct in6_addr *)addr;
mask6 = (struct in6_addr *)mask;
ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, secid);
@ -671,6 +674,7 @@ static int netlbl_unlhsh_add(struct net *net,
dev_name,
addr6, mask6);
break;
}
#endif /* IPv6 */
default:
ret_val = -EINVAL;
@ -1741,10 +1745,6 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb,
u16 family,
struct netlbl_lsm_secattr *secattr)
{
struct iphdr *hdr4;
struct ipv6hdr *hdr6;
struct netlbl_unlhsh_addr4 *addr4;
struct netlbl_unlhsh_addr6 *addr6;
struct netlbl_unlhsh_iface *iface;
rcu_read_lock();
@ -1752,21 +1752,29 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb,
if (iface == NULL)
goto unlabel_getattr_nolabel;
switch (family) {
case PF_INET:
case PF_INET: {
struct iphdr *hdr4;
struct netlbl_unlhsh_addr4 *addr4;
hdr4 = ip_hdr(skb);
addr4 = netlbl_unlhsh_search_addr4(hdr4->saddr, iface);
if (addr4 == NULL)
goto unlabel_getattr_nolabel;
secattr->attr.secid = addr4->secid;
break;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case PF_INET6:
case PF_INET6: {
struct ipv6hdr *hdr6;
struct netlbl_unlhsh_addr6 *addr6;
hdr6 = ipv6_hdr(skb);
addr6 = netlbl_unlhsh_search_addr6(&hdr6->saddr, iface);
if (addr6 == NULL)
goto unlabel_getattr_nolabel;
secattr->attr.secid = addr6->secid;
break;
}
#endif /* IPv6 */
default:
goto unlabel_getattr_nolabel;